Pump



E. PAOLICELLI.

PUMP.

APPLICATION FILED SEPT- 9, 1920.

Patented Nov. 15, 1921,

s PATENT Gr me EUSTACE PAOLIGELLI, OF NEW YORK, N. Y.

PUMP.

Application filed September 9, 1920. Serial No. 409,215.

To all whom it may concern:

Be it known that I, EUsTAon PAOLICELLI, a subject of the King of Italy, and resident of New York, in the county of New York and State of New York, have inventedcertain new and useful Improvements in Pumps, oi? which the following is aspecification.

This invention relates to improvements in pumps.

in object of this invention is to provide an air pump which is adapted to be attached to the cylinder head of an engine and used for the purpose of inflating tires and the like.

Another object of this invention is to provide an air pump or the kind mentioned above which is very simple in construction, having but few parts.

A. most important object of this invention is to provide a hollow extension to the cylinder or housingoi such a device in which a plurality of apertures are formed so that when the piston or plunger of the pump is in operation, the gases or vapors accumulating in the cylinder head of the engine may pass out into the atmosphere.

Further objects of this invention are to provide in such a device a piston or plunger having an elongated piston or plunger rod, means for keeping said plunger rod always in contact with the piston in the cylinder of an engine and means for keeping said plunger rod in inoperative position when desired.

The above and further objects in view will more fully be understood from the following description together with the accompanying drawings forming part of this specification and in which:

Figure 1 is a. detail cross-sectional view of my invention connected to the primer on the cylinder of an engine wherein the plunger or piston is in its lowest position.

Fig. 2 is a sectional view taken on line 2-2 of Fig. 1.

Fig. 3 is a partial View of my invention showing its connection to an attachment to the engine cylinder carrying the spark plug.

Fig. 4 is a view showing a modified method of connecting my invention to the cylinder head of an engine.

Fig. 5 is a view of the lower portion of my invention showing the piston or plunger rod in inoperative position and a means for keeping it in that position.

Fig. 6 is a view showing another modified method of connecting my invention" to the cylinder head of an engine.

In the drawings there is disclosed a barrel or pump cylinder 1 madeof suitable materlal provided with an internally threaded opening 2 adapted to be used as an air' outlet port and to which is connected a tube 3 for conveying compressed air'to the object to be inflated, and a series of apertures or openings 4 peripherally arranged below the center of said barrel adapted to be used as air inlet ports. The lower end of barrel 1 is threaded at 5 to receive a hollow cylindrical extension or nipple 6 of smaller diameter than barrel 1 which has a flange" 7 abutting said barrel or housing and a threaded portion 8. Between the flanged and threaded portion of nipple 6 there is provided a multiple of apertures or openings 9 the use of which is explained below.

The hollow of nipple 6 forms a continua tion of the hollow of barrel 1. Within barrel 1 there is disposed a piston or plunger 10 provided with an elongated pistonor plunger rod 11. This piston or plunger rod is adapted to pass through nipple 6 and the petcock or primer 12 (Fig. 1) which is secured to an opening in the head of engine cylinder 13 and protrudes into the latter. Nipple 6 may serve as guide for the plunger. The length of plunger rod 11 is such that when plunger 10 is just below air inlet ports 4 the open end Ofsaid plunger rod is in contact with piston 14 of the engine when the latter is at its lowest point in engine cylinder 13. A tension spring 15 at tached at one end to nipple 6, its other end abutting and attached to plunger 10 is spiraled around the upper portion of plunger rod 11, its purpose being to keep plunger 10 normally below inlet ports 4 and plunger rod 11 always in contact with piston 14 when said plunger is operating. A stop member 15 (see Fig. 5) may be provided which, in order to keep plunger rod 11 in inoperative position, is passed through openings 9 and orifice16.

My device may be attached to petcock 12 as shown in Fig. 1 or it cylinder 13 has no petcock by replacing the spark plug by a i In the former, cylinder 13 is provided with a threaded extension 18 and nipple 6 carries an internally threaded cap which is adapted to engage the threads on extension 18, in the latter the attachment consists of an externally threaded bayonet socket 19 the threaded portion of which engages the ope-ning in cylinder 13. Nipple 6 is provided with a pin 19 which engages the groove in socket 19 when the pump is made read for operation. When the pump is remove the opening in cylinder13 is closed by means of cap 20.

To putthe pump in operation, its lower end is attached to petcock 12 or other attachments described above and tube 3 atattachments shown in Figs. 1 or 3 are used,

. then the cock should be in open position.

Pin 15 is then withdrawn. On account of tension spring 15, plunger rod 11 will automatically enter cylinder 13. The engine is put in operation and as piston 14 reciprocates it puts in motion plunger rod 11 which carries plunger 10. The air enters inlet ports 9 and is forced, by the action of plunger .10 through outlet port 2 into tube 3, thereby inflating the object. The apertures 9 in nipple 6 act as exhaust outlets for the exhaust gases and lubricants which; may pass through the spare space between plunger rod 11 and the openings in nipple 6 and petcock 12, thereby preventing said gases from entering the air pump.

t isessential to have pure air enter the inflated object and this cannot be effectively done unless the outlet openings or apertures described above are provided. The exhaust gases and oils escaping from the cylinder opening would otherwise creep through and mix with the air entering the pump, thereby deteriorating'it. Aside from the air entering the object being inflated becoming impure, the heated vapors and oils, mixing with the incoming air, would impair the substance of which the inflated object is composed. I

Petcock 12, attachment 17 and socket 19 may be provided with a series of perforations 21 formed at their upper ends, for further aiding theescape of the exhaust gases and oils. It is highly essential to have the hot gases escape as quickly as possible, onaccountof their injurious effects, therefore the above auxiliarymeans should be employed when convenient.

Having thus described my invention and reserving for myself the right to make alterations and amendments within its purview, I claim 1. Asan attachment for a motor vehicle engine, an air pump comprising in'combinaopening atits lower end, and a series of orifices peripherally arranged at lts lower portion, a hollow cylindrical extension oi .smaller diameter than said barrel provided with an externally threaded upper portion adapted to engage the threads at the lower end of said barrel, means adapted to engage attaching means associated with the engine cylinder and a plurality of openings dis posed peripherally above said attaching means, said openings being adapted to form outlets from within the engine cylinder to facilitate the escape of gases and oils from the latter, a piston provided with a long piston rod, said rod being adapted to pass through said cylindrical extension and said attaching means thereby entering" said cylinder, a tension spring, the ends of which are secured to said cylindrical extension and said piston, and means for keeping said pis ton in inoperative position when desired.

2. As an attachment to the head of the cylinder of a motor vehicle engine, an air pump comprising in combination a barrel having internally threaded upper and lower ends and a plurality of circumferentially arranged openings at its lower portion, a reduced hollow extension provided with external threads engaging the threads in the lower end of said barrel and a multiple of orifices peripherally disposed, the hollow portion of said extension forming a continuation of the hollow of said barrel, means for connecting said extension to the cylinder, said means being provided with perforations in its upper portion and a hollow forming a continuation of the hollow in said extension, a piston disposed within said barrel, a solid elongated piston rod forming an integral part of said piston adapted to pass through the hollows formed in said extension and connecting means thereby entering said cylinder, a tension spring disposed between said piston head and said reduced extension, the endsof which are secured to the former andv the latterrespectively, and means for keeping said piston in inoperative position, when desired.

3. An air pump used in conjunction with the cylinder head of a reciprocating engine having in combination a barrel, its upper end being adapted to be connected to a tube, its lower end being internally threaded, said barrel having below its center a series of apertures adapted to act as inlet ports, a tube attached to said barrel forming an extension thereof, said tube being provided with a plurality of apertures, means for tures to the cylinder head of the engine, said connecting means having a series of perforations formed in its upper portion and an orifice forming a continuation of the hollow of said tube, a piston provided with a piston rod adapted to pass through said tubeand connecting said tube just below said aperthe orifice in said connecting means and extending normally into the engine cylinder a length equal to the piston stroke of said engine, and means for keeping the pump piston normally below the apertures in the pump cylinder.

4. In an air pump to be attached to the cylinder head of an engine the combination of a barrel provided with inlet and outlet ports, a reduced nipple attached to said barrel provided. with a series of apertures below said barrel, and a pin below said apertures, a bayonet socket provided with an external thread at its lower end adapted to engage the cylinder head of the engine, its upper end being adapted to engage said nipple, a piston and piston roe operable in said barrel, the

length of said piston rod being such that when said piston is just below the inlet ports of said barrel, the lower end of said piston rod is in contact with the engine piston at the lower end of its stroke, means for nor- ..mally keeping said piston rod in this latter position and means for keeping said piston rod in inoperative position, when desired.

5. In an air pump to be attached to the engine cylinder the combination of a barrel provided with inlet ports and an outlet port, a reduced nipple attached to aid barrel provided with a plurality of apertures and bayonet connecting means for connecting said nipple to said engine cylinder, a piston provided with an elongated solid rod adapt-- ed to pass through said nipple and said bayonet connecting means and normally extend into the engine cylinder a distance equal to the lowest position of the engine piston, means for keeping said piston normally below the apertures in said housing, and means for keeping said piston in inoperative position when desired.

6. In an air pump to be attached to an engine cylinder the combination of a barrel having inlet ports and an outlet port, said barrel being provided with a reduced extended tubular portion having formed therein a plurality of orifices, a piston provided with an elongated piston rod adapted to pass through said extended tubular portion and into an opening in the head of the engine cylinder, and means for keeping said piston rod normally below the inlet ports of said barrel.

7. In an air pump adaptable to be attached to the cylinder head of an engine, the combination of a barrel provided with an outlet port and a series or" apertures adapted to be used as inlet ports and a reduced tubular extension having a series of apertures, said tubular extension being connected to means for attaching it to the cylinder head, a plunger provided with a plunger rod adapted to operate in said barrel, means for keeping said plunger rod always in contact with the engine piston when in operation and means for keeping said plunger rod in inoperable position when desired.

8. In an air pump provided with a plunger and plunger rod adapted to pass through an opening in an engine cylinder, a barrel, wherein said plunger and plunger rod is incased, provided with inlet and outlet ports and a plurality of openings, said openings being adapted for facilitating the escape of the exploded vapors and accumulated lubricants which may be contained in said engine cylinder, thereby preventing said vapors from passing through the pump.

9. In an air pump provided with a plunger and plunger rod adapted to pass through an opening in an engine cylinder, a barrel housing said plunger and plunger rod provided with air inlet and outlet ports and a series of exhaust ports, said exhaust ports being disposed below said air inlet ports and adapted to communicate with the engine cylinder. 10. An air pump comprising a pump cylinder having air inlet ports, a plunger adapted to be actuated by the piston of an engine, and a plunger guide having ports for facilitating free communication between the interior of the guide and the outer atmosphere.

11. An air pump, comprising a barrel having means for admitting air therein, a plunger adapted to be actuated by an engine piston and a barrel extension having means for facilitating tree communication between the interior of this extension and the outer air.

12. An air pump, comprising a barrel, a plunger operated by an engine piston, and means "for preventing liquid or gaseous matter other than pure air from entering the barrel.

13. An air pump, comprising a barrel, a plunger adapted to be operated by the engine piston, and means for facilitating an expulsion of liquid or gaseous matter, which may be drawn into the barrel during the operation of the plunger.

Signed at New York, in the county of New York and State of New York, this 21st day of August, A. D. 1920.

. EUSTACE PAOLICELLI. 

